Having quite a bit of trouble with Baking
The hair looks to me like a problem with the normals, to recalculate normals select all the hair polygons on edit mode and click on Mesh -> Normals -> Recalculate Outside. Regarding to the colors, maybe you are changing the viewport color texture instead of using real material colors, for that when the object is selected check the materials. Also don't trust totally the render view, if your environment light is black and your hair is black your texture will end up being practically all black, try changing the light environment to white, its so easy, just clicking on the world icon and move up the color light environment slider to have white light environment. Maybe any of this helps or makes you dominate something new :-)